After spilled coca my display doesnt work

I spilled liquid on my macbook pro 13 "MC374LL / A mid 2010.

After having disassembled and cleaned the motherboard reboots and it works very well ... On external monitor only! Because the display on the screen of the macbook does not work ... I clean the CMS LVDS but nothing helps.!

Apparently there would be a fuse controlling the motherboard ... If someone wants to help me with the repair.

I have a hot air station AOYUE and a multimeter

In advance thank you